John R. Cassidy, M.D.
Neurological Surgery Physician · Venice, FL
John R. Cassidy, M.D. is a neurological surgery physician with a practice address in Venice, Florida, and NPI 1518067727, issued on Sep 25, 2006. Check the license on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- John R. Cassidy
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- ME0057567 VA
Self-reported in NPPES; status is on the state search - Practice location
- 842 Sunset Lake Blvd, Venice, FL 34292
- Phone
- (941) 484-3404
- Enumerated
- Sep 25, 2006
- Record last updated
- Feb 5, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (941) 496-7895
- Medicare enrollment
- Enrolled (PECOS I20040819000358); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1980
- Entity
- Type 1 · individual
Also registered at 842 Sunset Lake Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Coletta Boyle, ARNPNurse Practitioner1295016699
- Dana Chaykin-Glover, DOFamily Medicine Physician1205801784
- Jeffrey Glover, DOInternal Medicine Physician1588639678
- Christopher Guerin, M.D.Neurological Surgery Physician1982704128
- John Kontor, MDInternal Medicine Physician1891760344
- Casey Lineberry, PAPhysician Assistant1629487954
Verify John R. Cassidy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license searchCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% more Medicare Part D claims than the average neurological surgery physician in 2024
317 Medicare Part D claims for 147 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. 162 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen76 claims
- Hydrocodone-Acetaminophen42 claims
- Methylprednisolone39 claims
- Tramadol Hcl34 claims
- Prednisone19 claims
- Gabapentin15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 3 group practices
- Empath Therapies LLCVenice, FL
- Legacy Healthcare Services IncEnglewood, FL
- Neurosurgical Associates Cassidy And Guerin, MD, PAVenice, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Neurological Surgery Physician providers in Florida
There are 644 neurological surgery physician records in Florida.
Other neurological surgery physician records in Florida
- Isaac Abecassis, MDMiami, FL1326481052
- Adib Abla, MDMiami, FL1093995136
- Kingsley Abode-Iyamah, M.D.Jacksonville, FL1578859484
- Aviva Abosch, M.D.Miami, FL1023062999
- Pablo Acebal, M.DMiami, FL1598791212
- Badih Adada, MDWeston, FL1225128705
- Stephanie Adamczak, MDFort Myers, FL1811300148
- John Afshar, MDWest Palm Beach, FL1245215409
- Siviero Agazzi, MDTampa, FL1326058488
- Daniel Aghion, MDHollywood, FL1700045234
Common questions
What is John R. Cassidy, M.D.'s NPI number?
John R. Cassidy, M.D.'s National Provider Identifier (NPI) is 1518067727, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John R. Cassidy, M.D. located?
The NPPES record lists a practice address at 842 Sunset Lake Blvd, Venice, FL, 34292. Phone: (941) 484-3404. Providers update this record themselves, so call before visiting.
How can I verify John R. Cassidy, M.D.'s license?
Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John R. Cassidy, M.D. prescribe under Medicare Part D?
In 2024, John R. Cassidy, M.D. had 317 Medicare Part D claims for 147 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is John R. Cassidy, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.